high stakes here tonight for the president of the united states as he tries for a breakout moment in this dead-heat race for the white house. barack obama will accept the nomination of his party, but under very different circumstances than his first nomination. in 2008, he was leading a movement for hope and change. tonight, he hopes that the voters impatient with the economy will not seek change again so soon. in his speech tonight, mr. obama will say that the american people face the clearest choice of any time in a generation. our campaign 2012 correspondents are covering the convention, and, first, we're going to go to nancy cordes, who has found out more of what the president will say. nancy. >> reporter: scott, obama campaign officials tell us that tuesday night michelle obama was about the president's character, and last night with president clinton was about his record and tonight will be about the future. they say president obama will make it very clear where he wants to take this country in a second term. and we just received excerpts from the speech a few minutes ago. here